CODE EXAMPLE FOR JAVASCRIPT

Reusable Alpine.js components

<template x-component="dropdown">
    <div x-data="{ ...dropdown(), ...$el.parentElement.data() }">
        <button x-on:click="open">Open</button>

        <div x-show="isOpen()" x-on:click.away="close" x-text="content"></div>
    </div>
</template>

<x-dropdown content="Content for my first dropdown"></x-dropdown>

<div> Random stuff... </div>

<x-dropdown content="Content for my second dropdown"></x-dropdown>

<x-dropdown></x-dropdown>

<script>
    function dropdown() {
        return {
            show: false,
            open() { this.show = true },
            close() { this.show = false },
            isOpen() { return this.show === true },
            content: 'Default content'
        }
    }

    // The pure client-side code
    document.querySelectorAll('[x-component]').forEach(component => {
        const componentName = `x-${component.getAttribute('x-component')}`
        class Component extends HTMLElement {
            connectedCallback() {
                this.append(component.content.cloneNode(true))
            }
 
            data() {
                const attributes = this.getAttributeNames()
                const data = {}
                attributes.forEach(attribute => {
                    data[attribute] = this.getAttribute(attribute)
                })
                return data
            }
        }
        customElements.define(componentName, Component)
    })
</script>